The Difference Between Single and Double Row Bearings

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Single row angular contact ball bearings are designed to handle axial loads in one direction. When radial loads are applied, they generate additional axial forces, which must be counteracted by an opposite load. Therefore, these bearings are typically used in pairs to balance the forces effectively. In contrast, double row angular contact ball bearings can support larger radial and axial combined loads, as well as moment loads primarily due to radial forces. These bearings also help to limit axial displacement of the shaft or housing. The contact angle for such bearings is usually 30 degrees. The bearing code for this type is often "7". When it comes to paired mounting of angular contact ball bearings, they can handle both radial and axial combined loads, as well as pure radial loads. In a tandem configuration, the bearings can only withstand axial loads in one direction, while other configurations allow for bidirectional axial load capacity. Single row angular contact ball bearings are commonly used in applications such as machine tool spindles, high-speed motors, gas turbines, centrifugal separators, front wheel hubs of small vehicles, and differential pinion shafts. Double row angular contact ball bearings are widely used in oil pumps, root blowers, air compressors, various types of transmissions, fuel injection pumps, and printing machinery.

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